First slide

Classification of Animals

Question

Choose the correct statement regarding Petromyzon.

Easy

A

It migrates to freshwater for spawning.
B

Paired fins help in locomotion.
C

Mouth has circular jaws for sucking blood.
D

It has an open type of circulatory system.

Solution

Petromyzon is marine and migrates for spawning to fresh water. After spawning, within a few days, they die. Their larvae, after metamorphosis, return to the ocean.
It is jawless and has unpaired fins. It has a closed blood vascular system.

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